SupportLeanbackDemo: dont override fragment's object from activity

Activity should only initialize fragment's object when it is first created.
Then the object's lifecycle is controled by fragment.

b/17547817

Change-Id: I169111d2936aadfa9386b288e6922c563b4b5277

1 files changed, 6 insertions, 2 deletions

diff --git a/samples/SupportLeanbackDemos/src/com/example/android/leanback/DetailsActivity.java b/samples/SupportLeanbackDemos/src/com/example/android/leanback/DetailsActivity.java
index d74a50a7d..746da01b4 100644
--- a/samples/SupportLeanbackDemos/src/com/example/android/leanback/DetailsActivity.java
+++ b/samples/SupportLeanbackDemos/src/com/example/android/leanback/DetailsActivity.java
@@ -27,8 +27,12 @@ public class DetailsActivity extends Activity
     {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.details);
-        ((DetailsFragment)getFragmentManager().findFragmentById(R.id.details_fragment))
-                .setItem((PhotoItem) getIntent().getParcelableExtra(EXTRA_ITEM));
+        if (savedInstanceState == null) {
+            // Only pass object to fragment when activity is first time created,
+            // later object is modified and persisted with fragment state.
+            ((DetailsFragment)getFragmentManager().findFragmentById(R.id.details_fragment))
+                    .setItem((PhotoItem) getIntent().getParcelableExtra(EXTRA_ITEM));
+        }
     }
 
 }